Wisconsin bonfire explosion; 4 still hospitalized

Cedar Drive in Shawano County is seen Oct. 16, 2022, two days after more than two dozen teens were injured in a bonfire explosion. (WLUK/Lexi Schroeder)

Four people remain hospitalized in Wisconsin burn centers with injuries from a bonfire explosion last week during a party in the Town of Maple Grove, authorities said Thursday.

The Shawano County Sheriff’s Office said the explosion happened late Friday when a 55-gallon drum that was a quarter full of a mixture of gas and diesel fuel was placed on the fire.

SIGN UP TODAY: Get daily headlines, breaking news emails from FOX6 News

The sheriff's office said some of the victims are listed in critical condition, but wasn't specific.

Investigators say 17 of the injured people were privately transported to hospitals in Green Bay, which is about 25 miles (40.2 kilometers) north of the scene of the explosion.

The sheriff's office said it will not pursue any underage drinking violations in order to get witnesses to come forward. Authorities have said as many as 40 current and former Pulaski High School students were at the bonfire.